Don't. You won't need to, if it's the same as the Korean version, which I'll post links about here.
Spoiler alert for those who want to 'discover' the game (I found it to be a bit more fun that way).
Also,
DISCLAIMER: THIS APPLIES ONLY TO THE KOREAN VERSION OF THE GAME AT THE TIME OF THIS POST and this is posted in the anticipation that the International Version will have identical base bumper pack content.
- Videos - - Songlist - - Mission Mode -
I'm in the process of turning the latter two links into English, so if you can wait a few days, you'll have a more English-friendly version.

For now, a guide on how to read these.
Videos: Skip the Flash stuff - it's not going to work unless you're in Korea.
Simply click on the video you want to view. Daum (the Korean video service on which all of these videos are stored) is usually pretty slow, so alternative PSP low-quality links have been prepared (the last set of links).
Songlist/Courselist: In blue are new additions that
do not need to be unlocked. In red are new additions that
do need to be unlocked. In the courselist, in blue are regular boss songs, and in red are bonus boss songs (95%+ Max).
Mission Mode List:
- First column: mission number.
- Second column: The course's difficulty as reported by the game.
- Third column: Name of the mission.
- Fourth column: Prerequisite rank.
- Fifth column: Cost to attempt the mission (in Max Points).
- Sixth through eighth columns: Stages 1~3.
- Ninth column: Quotas and mandatory modifiers. (If there's a number, naturally, lower amounts are combo-based and higher amounts are score-based).
- Tenth column: Reward for completing the mission.
Now join me in the slow and painful wait for Technika!...well, it won't be painful for you East Coast folk, you guys have the game ; ;
(also, Dan, question - what rank are you? I'm curious.)